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They manufacture more efficient domestic wind generators without visual impact

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Having a wind turbine, that is, a windmill to produce electricity, installed in private homes currently has several limitations. However, new designs are emerging that make the process more efficient and are already very attractive to have at home, in addition to not causing the aesthetic impact of any conventional turbine. Two companies have got down to work and are marketing more discreet and highly efficient wind generators.

One of them is the RidgeBlade wind turbine, which lacks blades of any kind and sits high on the rooftop, using a design that makes it virtually invisible. The mechanism collects and concentrates the wind from outside, once it has been placed in a place (preferably on the crest of a roof that has a slope) towards which the wind is ‘pushed’ to go.

The wind, being forced to travel up the surface of the roof uphill, where the turbine is, can reach a speed up to three times higher to the one it has under normal conditions. In this way, the turbine can generate up to nine times more energy than a conventional wind turbine, according to the company’s website, https://thepowercollective.ca/

The RidgeBlade uses a sophisticated system to prevent noise from occurring during normal operation, and is also designed to self-limit rotor speed due to its mechanical properties.

These wind generators reach their full capacity with wind speeds as low as 40 km/hwhen the turbine reaches its maximum rotation speed, a speed that is not exceeded even in strong gales, thus providing great stability.

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RidgeBlade has been tested in winds of over 160 km/h, both inside a wind tunnel and outdoors, under real conditions, with no loss of efficiency.

The company, located in Canada and with representatives in several cities in the United States and Europe (France and Italy, at the moment), currently sells two models. One is the RB1 Residential, which is the smallest domestic version and is suitable for most homes.

For its part, the RB2 Commercial is a larger and more powerful version and has been designed to be installed in a wide variety of buildings. Provides greater power than the RB1 turbine.

There is also a hybrid version that incorporates a photovoltaic panel to combine solar and wind generation.

Nemoi, another domestic alternative

However, this is not the only company that is committed to new models of more modern and efficient wind turbines. Semtive, owned by two Argentine businessmen, has created Nemoi, a turbine that, although it may vaguely resemble traditional ones, is much more discreet (the size of a bush) and has three vertical blades that rotate like a merry-go-round around a central axis, completely silently.

According to the company, one of these turbines can supply power to a household of four people only with speeds of 16 to 20 km/h. The contraption can be assembled by a single person, is made of aluminum and can be manufactured in any location.

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Why is a small turbine like these so efficient? Ignacio Juárez, head of the company, explains that one of the reasons is that in these domestic installations no energy is lost in transport since it is generated where the mill is (which is usually several kilometers away) and the house. This means that up to 40% of the energy generated is lost along the way.

Since in this case the generator is in the house itself, all the energy generated is used. These turbines, of which there are several models depending on their capacity, have a retail price of around $3,600, but the company calculates that the owners of these systems can recover their investment in just two years, if they benefit from the subsidies that administrations usually give or are in very windy places, and in seven years at most if they are areas with little wind and They lack subsidies.

Customers often use these turbines as a complement and even as an alternative to solar panels, they say from Semtive.

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Environment section contact: crisisclimatica@prensaiberica.es

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